Distinct growth stages controlled by the interplay of deterministic and stochastic processes in functional anammox biofilms

Niederdorfer, Robert and Fragner, Lisa and Yuan, Ling and Hausherr, Damian and Wei, Jing and Magyar, Paul and Joss, Adriano and Lehmann, Moritz F. and Ju, Feng and Buergmann, Helmut. (2021) Distinct growth stages controlled by the interplay of deterministic and stochastic processes in functional anammox biofilms. Water Research, 200. ARTN 117225.

Full text not available from this repository.

Official URL: https://edoc.unibas.ch/86538/

Downloads: Statistics Overview


Mainstream anaerobic ammonium oxidation (anammox) represents one of the most promising energyefficient mechanisms of fixed nitrogen elimination from wastewaters. However, little is known about the exact processes and drivers of microbial community assembly within the complex microbial biofilms that support anammox in engineered ecosystems. Here, we followed anammox biofilm development on fresh carriers in an established 8m 3 mainstream anammox reactor that is exposed to seasonal temperature changes (-25-12 degrees C) and varying NH 4 + concentrations (5-25 mg/L). We use fluorescence in situ hybridization and 16S rRNA gene sequencing to show that three distinct stages of biofilm development emerge naturally from microbial community composition and biofilm structure. Neutral modelling and network analysis are employed to elucidate the relative importance of stochastic versus deterministic processes and synergistic and antagonistic interactions in the biofilms during their development. We find that the different phases are characterized by a dynamic succession and an interplay of both stochastic and deterministic processes. The observed growth stages ( Colonization, Succession and Maturation ) appear to be the prerequisite for the anticipated growth of anammox bacteria and for reaching a biofilm community structure that supports the desired metabolic and functional capacities observed for biofilm carriers already present in the system (-100g NH4-N m 3 d -1 ). We discuss the relevance of this improved understanding of anammox-community ecology and biofilm development in the context of its practical application in the start-up, configuration, and optimization of anammox biofilm reactors. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Geowissenschaften > Geochemie Stoffkreisläufe (Lehmann)
UniBasel Contributors:Lehmann, Moritz F and Magyar, Paul Macdonald
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:02 Feb 2022 09:31
Deposited On:02 Feb 2022 09:31

Repository Staff Only: item control page